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Gainers Cool Holdings, Inc. (NASDAQ: AWSM) shares gained 80.95 percent to close at $19.00 on Friday after surging 53.28 percent on Thursday. Astrotech Corporation (NASDAQ: ASTC) shares rose 71.47 percent to close at $5.59. Y-mAbs Therapeutics, Inc. (NASDAQ: YMAB) shares jumped 50 percent to close...

Gainers Viking Therapeutics, Inc. (NASDAQ: VKTX) surged 87.3 percent to close at $19.46 on Tuesday after announcing top-line results from Phase 2 study of VK2809. The study achieved primary endpoint. Navidea Biopharmaceuticals Inc (NYSE: NAVB) shares climbed 60.06 percent to close at $0.2889...

Gainers NIO LIMITED (NYSE: NIO) shares gained 69.7 percent to close at $11.20 on Thursday after climbing 5.43 percent on Wednesday. NIO priced its IPO at $6.26 per ADS. Impinj, Inc. (NASDAQ: PI) jumped 33.17 percent to close at $25.01 on Thursday after the company reported upbeat earnings for its...

Gainers Impinj, Inc. (NASDAQ: PI) climbed 39.3 percent to $26.15 after the company reported upbeat earnings for its second quarter and issued strong Q3 guidance. NIO LIMITED (NYSE: NIO) shares rose 33.3 percent to $8.7942 after climbing 5.43 percent on Wednesday. GNC Holdings, Inc. (NYSE: GNC)...

Gainers Fred's, Inc. (NASDAQ: FRED) shares surged 81.65 percent to close at $2.97 after Walgreens announced it will buy the pharmacy patient prescription files and related pharmacy inventory of 185 Fred's stores for $165 million. ProQR Therapeutics N.V. (NASDAQ: PRQR) gained 18.04 percent...

Gainers Netlist, Inc. (NASDAQ: NLST) shares jumped 116.5 percent to $0.3182 after the nano-cap memory product company confirmed the United States International Trade Commission (ITC) issued a favorable claim construction order. The company says marks an "important turning point" in a...

Top Upgrades Stifel Nicolaus upgraded Mercadolibre Inc (NASDAQ: MELI) from Hold to Buy. MercadoLibre shares rose 1.39 percent to $333.00 in pre-market trading. Deutsche Bank upgraded YRC Worldwide Inc (NASDAQ: YRCW) from Hold to Buy. YRC Worldwide shares rose 2.94 percent to $9.45 in pre-market...

Gainers Tengasco, Inc. (NYSE: TGC) shares climbed 73.71 percent to close at $1.52 on Tuesday. Anavex Life Sciences Corp (NASDAQ: AVXL) gained 43.61 percent to close at $3.82 in reaction to an encouraging announcement from Australia's regulatory body. The clinical-stage biopharmaceutical...

Gainers RadiSys Corporation (NASDAQ: RSYS) shares jumped 120.28 percent to close at $1.54 on Monday after Reliance Industries announced plans to acquire Radisys for $1.72 per share in cash. New Concept Energy, Inc. (NYSE: GBR) shares climbed 110.9 percent to close at $8.90 on Monday after climbing...

Gainers Solaredge Technologies Inc (NASDAQ: SEDG) shares are up 14 percent after issuing strong guidance following a fourth quarter earnings beat. Earnings came in at 85 cents per share, beating estimates by 20 cents. Sales came in $9 million higher than estimates at $189 million. A 13F...

Top Upgrades Baird upgraded TerraForm Power Inc (NASDAQ: TERP) from Neutral to Outperform. TerraForm Power shares fell 0.95 percent to close at $13.55 on Friday. Piper Jaffray upgraded ServiceNow Inc (NYSE: NOW) from Neutral to Overweight. ServiceNow shares gained 3.30 percent to close at...

Toward the end of trading Friday, the Dow traded down 0.06 percent to 22,368.44 while the NASDAQ climbed 0.61 percent to 6,493.05. The S&P also rose, gaining 0.29 percent to 2,517.33. Leading and Lagging Sectors Friday afternoon, the technology shares surged 0.62 percent. Meanwhile, top...

Midway through trading Friday, the Dow traded down 0.06 percent to 22,367.31 while the NASDAQ climbed 0.63 percent to 6,493.78. The S&P also rose, gaining 0.28 percent to 2,517.20. Leading and Lagging Sectors On Friday, the technology shares surged 0.66 percent. Meanwhile, top gainers in the...

Ominto Inc (NASDAQ: OMNT) shares dipped 14.6 percent to $4.97. Revlon Inc (NYSE: REV) shares slipped 14.6 percent to $23.50. Nightstar Therapeutics PLC (NASDAQ: NITE) shares declined 12.5 percent to $21.00. Nightstar Therapeutics priced IPO at $14 per ADS. LSC Communications Inc (NYSE...

Supreme Industries, Inc. (NYSE: STS) shares jumped 35.4 percent to $20.95. Wabash National Corporation (NYSE: WNC) announced plans to acquire Supreme Industries for $21.00 per share. Achillion Pharmaceuticals, Inc. (NASDAQ: ACHN) shares climbed 32.7 percent to $5.32 after the company posted...